function *generator(arg) {
	console.log(arg)
	let one= yield '一只没有耳朵';
	console.log(one)
	let two=yield '一只没有尾巴';
	console.log(two)
	let three=yield '真奇怪';
	console.log(three)
}
let iterator=generator("AAA");
console.log(iterator.next())
console.log(iterator.next("CCC"))
console.log(iterator.next("DDD"))
console.log(iterator.next("EEE"))
